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Finding the Fourth Proportional to 280,368.84, 386,895.48 and 159,498.72

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Solution

The fourth proportional to 280,368.84, 386,895.48 and 159,498.72 is: 220,100.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,368.84 : 386,895.48 = 159,498.72 : x
  2. Step 2: Convert to fraction form
    280,368.84/386,895.48 = 159,498.72/x
  3. Step 3: Cross multiply
    280,368.84x = 386,895.48 × 159,498.72
  4. Step 4: Simplify right side
    280,368.84x = 61,709,333,833.79
  5. Step 5: Solve for x
    x = 61,709,333,833.79/280,368.84
  6. Step 6: Final answer
    x = 220,100.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.